Rotary fan



lUNITED STATES-' PATENT Orti-cli.`

RETERIMURRAY, JR., EY NEWARK, NEW JERSEY.

RoTARY lFAN.

SPECIFICATION forming partvof Letters Patent No. 377,573,dal:ed February 7, 1888.

Application filed March 31, 1887.

To aZZ- zcwnt it, may concern,.-

Be it known that I, PETER MURRAY, Jr., of Newark, in the connty'of Essex and State of New Jersey, have invented-certain new and useful Improvements in lRotary. Fans, of which the followingisa specification.

This invention relates to an improved rotary fan of that classwhich is suspended from the ceiling for the' purpose ot'agitating tli'e air for -ventilating and cooling purposes; and the invention consists ofia rotaryi'an-shaft thatissupportedeon bearings of a hangei-, frame attached? to the'ceiling'. The bearings ot' the driving-shaft are suspended from the center scrcw,.by which also the baseof the hangerffram'e is attachedt'othe ceiling.- The hub of the fan is applied loosely tothe fanshaft and stopped or started by a clutch device. Each fanseetion is formed of a number of thin pivote'd'- blades and a flexible connectingweb, the sections being opened according tothe speedy imparted v4to the fan by smaller auxiliary fans applied at right 'angles to the outermost movable -'blade of thefan, while the opposite covering-blade is attached stationary tothe hub of. the fan. NVhenthe motion of the fan is stopped, the blades of the same foldA up automatically, while the same are spread apart more or less bythe resistance ofthe air to the auxiliaryfans, according to the speed imparted to the'faln .In the accompanying drawings, Figure 1 represents a side elevation, partly in section,

of my improved rotaryfan. Figs. 2 and 4 are sections, and Fig. 3 a side elevation, of. the

' f 1 clutch devices employed for throwing the loose hub of the fan in or out of gear with the fanf shaft. Fig. -is aldetailbottom view of the spread apart; land Fig. 7 is a detail'endview hanger-frame of my, improved rotary fan; B, v

base-frame,4 by which the hanger-frame of the fan-shaft is applied to the ceiling. Fig. 6 is a,-

side view of4 the fan, the fan-sectionsbeing of one folding section of the fan. I v Similar letters of reference indicate corre spending parts.

- Referring to the drawings, A represents the the fan-shaft, which is supported in bearings a a of the hanger-frame; and C, the fan,w hichr is` appli`^dby a loose hub, C,to the lower endl of the fan-shaft. f The upper end-of the hang. v

` Serial '.o. 233,137. (No model.)

er-frame is applied-by screws toa ring-shaped v base, D, that is attached byacenter screw, D', to`the ceiling, as shown in Fig. jl. z The center 'sci-ew, D', supports the ring-shaped base-"55 frame D vby a -fxed head, d', which 4is fitted Q into a eentralsocket, all, of the base-frame The center sfcrew, D", is elongated below the" head and provided with a second head,` d, on', which'aresupported, by'e es cctwo hanger: 6o bearings, e 6, for the'encs of the horizontal transmitting-shafts E. The shafts E are'prol vided with beveled cog-wheels or friction'- gears f, that mesh with a bevel-wheel, f', at the upper end of th'e fan-shaft B and'ixnpart rol 65:

tary motionto the latter. 'The`hanger-bear-- ings e e of the driving-shafts E E turn by the eyes e at their upper -ends on the lower part 4*of the center screw, D', so that the 'shafts EE may be arranged in line with eachother, orat 7o any suitable angle to each other, as 'required by' the position of the fans. The upper end of the t fan-'shaft Brests by means of a collar,.b, on the upper bearing, a. l

To the lower end of the fan-shaft is applied v a knob or handle, g, which is provided at its upper edge with teeth thatv engagea similarlytoothed lower edge of a loose ring, g2, upon which the smooth bottom edge of theloose fan-hub C rests. Above the fan-hub C the 8o shaft B has a fixed collar,rg., the lower edge of which is notched or serrated, soas tol engage l the similarlynotehed or serrated upper edge of the fan-hub C when the latter is raised.

This is accomplished by taking hold of the I ring` y?, so that bythe motion Aof the fan-shaft the inclined teeth of the knob g move along' the teeth ofthe ring, whereby the ring and hub are raisedand the latter-thrown into mesh with thexedcollarlg, so that the fan-hub C 9o' 1 and fan C are carried along and-rotated with thefan-shait.

In place ofthe clutch just described the clutch device shown in Fig.3 may be-used, in" which, in place of a notehedor serrated coltional packing-ring is used. Y In the `modification shown in Fig. 4 the hub',y C is placed on a sleeve. that extends over the A fan-shaft and which is made integral `with the roo. `knob'g. i Between the fan-hub andthe knobg is'nterposed the toothed ring g,"in.the samev 4 secured to sockets'v of the of each section being pivoted to a .fixed pivot,

f To the inner blade'oi each section is rigidly applied, by -ineans offa socket,

hionecovering-blade of which is rigidly applied to said pivo while the remaining blades and theopposite coveringyblade swing loosely the'reim.` L l endof the pivotcd coveringp h', a disk-shaped auxiliary fan, Fgwhich extends at right angles or nearly so from the fan-section, and which serves for the purpose of spreading the fan-section apart when rotary motion vis imparted to the fan.

This spreading-action i's imparted by the re-` sistance of the auxiliary fans tothe ai'r,which is sufficient to gradually lift the lightblades v of the fan-sections and spread them apart more or less, according to the speed imparted to the v l fan-shaft. When the motion of the fanzis interrupted, the disk-shaped fans oferfnofresistance to the air, and the fansections automatically fold up by gravity toward thefxed cov`v I ering-blades, as s'hownin Fig. 1.

This construction of fanshas the advantage that whenl the fan ispstopped the sections of In testimony the same take up but a small space,.whi1e when the fan is in. motion they are spread apart and exert a. powerful agitating action on the air'.

Having thus described my invention,I claim .as new and desire to secure by Letters Patentof a base-frame',A s centhe same to theceil- 1. The combination ter screw for attaching ing, fname attached to the basefframe, hanger-bearings snpported by eyes or sleeves on the lower head of the center screw, and motion-transmitting shafts supported in saidbearings, sub. 4stantially as set forth.

2. A rotaryfan' composed of two fan-sec-- tions, each being made ofa fixed outer blade and pivoted blades connected by a web of snit able material,v and o'f two disk-shaped fans attached to socket-s of thel outermost movable blades, so as to spread sections by the pressure of the air'on said disk-4 shaped fans drop the blades into a folded Vposition when the' fan'is stopped, substantially as set forth.

that I' claim the vforegoing as m'yinvention I have signed my name in pres ence-vof tw'o subscribing witnesses.

PETER VMURRAY, J R.

Witnessesz SIDNEY MANN, i' MARTIN PETRY.

the blades of the fanl when the fan lis in 'motion and 4' said screwhaving'two-heads, ahanger 1 

